I use a very similar menui n several windows in an app I am working on, and all the rest work perfectly, as expected. However, on this one window, as soon as you move the mouse even very slightly down towards the menu first item, the whole dropdown closes immediately.
I have tried copy/Paste of an identical menu into the offending window with no success. If I mouse down the side of the dropdown very carefully, & can stay in the popups "Background border around the items, it stays put, but the moment I touch any item - it disappears.
It does this on any menu item that has a dropdown item inside it.
It is driving me mad, Can anyone suggest what may be wrong here ? I am positive it is NOT the menu code itself, as it is identical to other working window menus, so it must be something to do with this particular window, although there is nothing particularly different about it?